EP 0801660 A4 19980408 - EXTRUDED POLYMER FOAM WITH FILLER PARTICLES AND METHOD
Title (en)
EXTRUDED POLYMER FOAM WITH FILLER PARTICLES AND METHOD
Title (de)
EXTRUDIERTER POLYMERSCHAUM MIT FÜLLSTOFFTEILCHEN UND VERFAHREN
Title (fr)
MOUSSE POLYMERE EXTRUDEE COMPORTANT DES PARTICULES DE CHARGE ET PROCEDE AFFERENT
Publication
Application
Priority
- US 9500175 W 19950106
- US 14462193 A 19931101
Abstract (en)
[origin: US5424014A] A method for preparing a thermosetting foam, such as polyisocyanurate or polyurethane foam, includes introducing polyol and isocyanate to a screw of an extruder and mixing in the extruder screw. Catalyst is then added and mixed with the already formed mixture in the extruder screw. This mixture is extruded onto a conveyor and foamed on the conveyor. Finely divided carbon black, dispersing agent and/or surfactant may be mixed with polyol before introducing to the screw of the extruder or carbon black may be dispersed in polyol in the extruder and a polyol premix made before the remainder of the polyol is added. Foam cell size is decreased when extruder speed is increased. The foaming agent, which is preferably HCFC or water, may be mixed with one of the components, preferably the polyol, before introducing to the screw of the extruder. The mixture is cooled before extruding onto a conveyor to delay the foaming step until the mixture is outside the extruder. A carbon black dispersion may also be made, for future use. The process described may be used for making foam boards or bunstock.
IPC 1-7
IPC 8 full level
C08J 9/14 (2006.01); B29C 44/34 (2006.01); B29C 44/50 (2006.01); B29C 47/00 (2006.01); C08G 18/00 (2006.01); C08G 18/08 (2006.01); C08J 9/00 (2006.01); C08J 9/02 (2006.01); C08J 9/04 (2006.01); C08K 3/00 (2006.01); C08K 3/04 (2006.01); C08K 3/18 (2006.01); C08K 3/34 (2006.01); B29K 75/00 (2006.01); B29K 105/04 (2006.01); B29L 7/00 (2006.01); C08G 101/00 (2006.01)
CPC (source: EP US)
B29B 7/603 (2013.01 - EP); B29B 7/748 (2013.01 - EP); B29B 7/823 (2013.01 - EP); B29B 7/826 (2013.01 - EP); B29B 7/90 (2013.01 - EP); B29C 44/3442 (2013.01 - EP US); B29C 44/505 (2016.11 - EP US); C08J 9/0066 (2013.01 - EP US); C08J 9/144 (2013.01 - EP US); B29B 7/42 (2013.01 - EP); B29B 7/48 (2013.01 - EP); B29B 7/7404 (2013.01 - EP); C08J 2201/03 (2013.01 - EP US); C08J 2375/04 (2013.01 - EP US)
Citation (search report)
- [A] DE 2707026 A1 19780824 - BAYER AG
- [A] US 5373026 A 19941213 - BARTZ ARNOLD M [US], et al
- [A] GB 1559909 A 19800130 - BAYER AG
- [A] US 5137930 A 19920811 - SOUKUP THOMAS G [US]
- [A] CHEMICAL ABSTRACTS, vol. 109, no. 12, 19 September 1988, Columbus, Ohio, US; abstract no. 94146, PEREPELKINA, N. K. ET AL: "Rigid filled polyurethane foam with lowered flammability for building structures" XP002053017 & PLAST. MASSY (1988), (6), 61-3 CODEN: PLMSAI;ISSN: 0554-2901, 1988
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 5424014 A 19950613; AT E206443 T1 20011015; AU 1598995 A 19960724; CA 2209563 A1 19960711; CA 2209563 C 20020625; DE 69523070 D1 20011108; DE 69523070 T2 20020704; EP 0801660 A1 19971022; EP 0801660 A4 19980408; EP 0801660 B1 20011004; ES 2164760 T3 20020301; JP 3226927 B2 20011112; JP H10502415 A 19980303; MX 9704957 A 19980228; WO 9620966 A1 19960711
DOCDB simple family (application)
US 14462193 A 19931101; AT 95907992 T 19950106; AU 1598995 A 19950106; CA 2209563 A 19950106; DE 69523070 T 19950106; EP 95907992 A 19950106; ES 95907992 T 19950106; JP 52092396 A 19950106; MX 9704957 A 19950106; US 9500175 W 19950106